Ice on the equator: quaternary geology of Mount Kenya, East Africa
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Sister Bay, Wis.
Caxton
1990
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | XVI, 386 S. Ill., Kt. |
| ISBN: | 0940473194 |
Internformat
MARC
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Datensatz im Suchindex
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| adam_text | Titel: Ice on the equator
Autor: Mahaney, William C
Jahr: 1990
TABLE OF CONTENTS
Foreword xi
Preface xiii
Chapter 1
Introduction 1
Chapter 2
Environmental Setting
2.1 Bedrock Geology 9
2.2 Climate and Atmospheric Circulation 15
2.3 The Vegetation 20
2.4 Geomorphic Overview 38
2.5 Stratigraphie Framework 43
Chapter 3
Dating and Analytical Methods
3.1 Introduction 47
3.2 Topographic Position and Superposition 47
3.3 Weathering Characteristics 47
3.4 Lichenometry 48
3.5 Paleosol and Soil Stratigraphy 49
3.6 Amino Acid Dating 50
3.7 Paleomagnetism 51
3.8 Radiocarbon 51
3.9 Soil Microbial Analysis 51
3.10 Thermoluminescence 52
3.11 Potassium-40/Argon-40 53
3.12 Neutron Activation Analysis 53
3.13 Laboratory Methods 53
Chapter 4
Gorges and Lake Ellis Glaciations
4.1 Introduction 55
4.2 Older Diamictons and Tills 55
4.3 Evidence for pre-Olduvai Glaciation 64
4.4 Geomorphologie Evidence for Early Quaternary Glaciations 65
4.5 Surface Weathering Features 74
4.6 Stratigraphy of Gorges Deposits 74
4.7 Paleomagnetic Dating of Gorges Deposits 81
4.8 Stratigraphy of Lake Ellis Deposits 90
4.9 Paleomagnetic Dating of Lake Ellis Deposits 93
4.10 Conclusions 98
Chapter 5
Naro Moru and Teleki Glaciations
5.1 Introduction 101
5.2 Moraine Sequences 101
5.3 Surface Weathering Features 103
5.4 TV23 Section 104
5.5 TV61A Section 114
5.6 Relative Weathering of Middle Pleistocene Deposits 119
5.7 Loess Cover 125
5.8 Paleomagnetic Dating 125
5.9 Conclusions 132
Chapter 6
The Liki Glaciation
6.1 Moraine Sequence 133
6.2 Western Drainages 133
6.3 Northern Drainages 141
6.4 Eastern Drainages 142
6.5 Ithanguni 144
6.6 Relationship to Loess Cover 154
6.7 Relationship to Buried Paleosols 154
6.8 Relative Weathering Intensities 154
6.9 Paleomagnetic Dating 158
6.10 Conclusions 161
Chapter 7
Holocene (pre-Neoglaciation) and Late Glacial Record
7.1 Introduction 163
7.2 Déglaciation of Mount Kenya 163
7.3 Liki III Moraines and Bog Sites 165
7.4 Bog and Lake Cores 165
7.5 Formation of Recessional Stillstand Moraines 169
7.6 Weathering Characteristics 174
7.7 Liki III Paleosols 174
7.8 Liki III Rock Glaciers 176
7.9 Holocene Stratigraphy and Paleosols 185
7.10 Pollen Sequence 199
7.11 Conclusions 199
Chapter 8
Neoglaciation
8.1 Introduction 203
8.2 Previous Lichenometrical Work 203
8.3 Selection of Species 203
8.4 Environmental Factors 215
8.5 Neoglacial Deposits 216
8.6 Radiocarbon Dated Surfaces 219
8.7 Lichen Data 219
8.8 Lichen Growth Curve 222
8.9 Weathering Characteristics 225
8.10 Soil Stratigraphy
8.11 Conclusions
225
227
Chapter 9
Soil Morphogenesis
9.1 Introduction 229
9.2 Upper Afroalpine Soil/Paleosol Chronosequence 230
9.3 Chemical Trends 230
9.4 Liki (Würm) Paleosol Chronosequence 235
9.5 Paleosol Chemistry in Liki (Würm) Chronosequences 240
9.6 Early to Late Pleistocene Buried Paleosols 244
9.7 Conclusions 255
Chapter 10
Aminostratigraphy
10.1 Introduction 257
10.2 Sampling Sites 261
10.3 Climatic Limitations 261
10.4 Vegetation Influences 261
10.5 Buried Paleosols 262
10.6 Amino Acid Racemization 264
10.7 Particle Size 269
10.8 Distributions in Surface Soils 269
10.9 Conclusions 274
Chapter 11
Paleoclimatic Reconstructions
11.1 Glacial vs. Interglacial Paleoclimate 275
11.2 Clay Minerals and Paleoclimate 276
11.3 Equilibrium Line Altitudes 285
11.4 Asymmetry of Mount Kenya Icecaps 286
11.5 Holocene and Liki Interstadial Paleoclimates 287
11.6 Will the Eleven Remaining Glaciers Survive? 289
Chapter 12
Ecological and Geomorphological Processes
12.1 Introduction 291
12.2 Abiotic Considerations 291
12.3 Restructuring of the Afroalpine Ecosystem 294
12.4 Microflora Distributions 298
12.5 Frost Patterned Soils and Microorganisms 299
12.6 Mud Polygon Genesis and Small Mammal Grazing Activity 314
12.7 Geophagic Behavior Among Buffalo 330
12.8 Prehistoric Human Occupations 334
12.9 Historic Human Impact 338
12.10 Conclusions 343
X
Chapter 13
Intermountain Correlations and the Deep Sea Record
13.1 Introduction 345
13.2 Pleistocene and Recent Glaciations 345
13.3 Liki II Paleosol Correlations 353
13.4 Correlations with Nearby Mountains and Western Europe 353
13.5 Correlation with the Marine Record 355
13.6 Correlation with the Rocky Mountain Glacial Record 359
13.7 Conclusions 361
Chapter 14
Summary 363
References 367
Plates
Plate 1 Map of Lake Ellis and Gorges moraines on the eastern
flanks of Mount Kenya
Plate 2 Map of Teleki, Naro Moru and Liki Moraines in Gorges
Valley, Hinde Valley, and Lake Ellis areas, eastern flanks of
Mount Kenya
Plate 3 Map of Liki Moraines in the Kazita East and West
drainages of Mount Kenya
Plate 4 Map of Liki moraines on Ithanguni, northeastern flank of
Mount Kenya
Plate 5 Map of Neoglacial and Liki III moraines on Mount Kenya
Plate 6 Correlation diagram of Quaternary glacial deposits of the
Tropical Mountains
Plate 7 Correlation diagram of Quaternary Deposits in East Africa
with the European Chronostratigraphy
|
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| discipline | Geologie / Paläontologie Geographie |
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| id | DE-604.BV004315086 |
| illustrated | Illustrated |
| indexdate | 2024-07-09T16:11:21Z |
| institution | BVB |
| isbn | 0940473194 |
| language | English |
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| spelling | Mahaney, William C. 1941- Verfasser (DE-588)124798365 aut Ice on the equator quaternary geology of Mount Kenya, East Africa by William C. Mahaney Sister Bay, Wis. Caxton 1990 XVI, 386 S. Ill., Kt. txt rdacontent n rdamedia nc rdacarrier Quartär (DE-588)4048009-4 gnd rswk-swf Gletscher (DE-588)4137668-7 gnd rswk-swf Pleistozän (DE-588)4046350-3 gnd rswk-swf Mount Kenya (DE-588)4075008-5 gnd rswk-swf Mount Kenya (DE-588)4075008-5 g Gletscher (DE-588)4137668-7 s Pleistozän (DE-588)4046350-3 s DE-604 Quartär (DE-588)4048009-4 s HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=002683254&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Mahaney, William C. 1941- Ice on the equator quaternary geology of Mount Kenya, East Africa Quartär (DE-588)4048009-4 gnd Gletscher (DE-588)4137668-7 gnd Pleistozän (DE-588)4046350-3 gnd |
| subject_GND | (DE-588)4048009-4 (DE-588)4137668-7 (DE-588)4046350-3 (DE-588)4075008-5 |
| title | Ice on the equator quaternary geology of Mount Kenya, East Africa |
| title_auth | Ice on the equator quaternary geology of Mount Kenya, East Africa |
| title_exact_search | Ice on the equator quaternary geology of Mount Kenya, East Africa |
| title_full | Ice on the equator quaternary geology of Mount Kenya, East Africa by William C. Mahaney |
| title_fullStr | Ice on the equator quaternary geology of Mount Kenya, East Africa by William C. Mahaney |
| title_full_unstemmed | Ice on the equator quaternary geology of Mount Kenya, East Africa by William C. Mahaney |
| title_short | Ice on the equator |
| title_sort | ice on the equator quaternary geology of mount kenya east africa |
| title_sub | quaternary geology of Mount Kenya, East Africa |
| topic | Quartär (DE-588)4048009-4 gnd Gletscher (DE-588)4137668-7 gnd Pleistozän (DE-588)4046350-3 gnd |
| topic_facet | Quartär Gletscher Pleistozän Mount Kenya |
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